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Toshiba FT-8258 Service Manual
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Toshiba FT-8258 Service Manual

Toshiba FT-8258 Service Manual

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FILE NO. 2B0-9801
SERVICE MANUAL
CORDLESS TELEPHONE
FT-8258
PUBLISHED IN JAPAN, Jun., 1998

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Summary of Contents for Toshiba FT-8258

  • Page 1 FILE NO. 2B0-9801 SERVICE MANUAL CORDLESS TELEPHONE FT-8258 PUBLISHED IN JAPAN, Jun., 1998...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ........................1 OPERATING CONTROLS ........................2 ALIGNMENT PROCEDURE ........................3 BLOCK DIAGRAMS..........................9 SCHEMATIC DIAGRAMS........................14 TROUBLESHOOTING HINTS ......................24 IC AND TRANSISTOR VOLTAGE CHART ..................31 SEMICONDUCTOR LEAD IDENTIFICATION..................38 ELECTRICAL PARTS LOCATION ...................... 42 WIRING DIAGRAMS ........................... 47 EXPLODED VIEW AND MECHANICAL PARTS LIST ................

  • Page 3: Operating Controls

    OPERATING CONTROLS HANDSET CONTROLS LINE 1 LED (Green) Antenna • Lights when the handset is used for LINE 2 LED (Orange) a phone conversation on line 1. • Lights when the handset is used for • Blinks when the base unit or a phone conversation on line 2.

  • Page 4: Alignment Procedure

    ALIGNMENT PROCEDURE Test Mode For Base Unit Press the “ ” and “#” keys at the same time about 1.5 seconds while turning the power on, the confirmation beep will sound to indicate that the unit is in the test mode. 1.
  • Page 5 Test Mode For Handset Unit To perform the TEST mode, turn the power ON by pressing the “ ” and “#” buttons at the same time. When entered the TEST mode, the bell rings and the unit enters TEST mode 1 . ( Refer to the following table. ) 1.
  • Page 6 Base Unit Transmitter Section Connection BASE RF PCB BASE MAIN PCB AF GEN. Test Point Power Meter Test Point DC IN TEL Line 1kHz 61.0mV 9V Jack 1/2 Jack Test Point Frequency Counter AC 120V Adapter 60Hz Deviation Meter Preset Place the Base Unit in VCO/TX FREQ ADJ mode in accordance with the procedure on page 3.
  • Page 7 Receiver Section Connection BASE RF PCB BASE MAIN PCB AC Voltmeter RF SG Dummy Load (600-ohm) − − TEL Line DC IN 1/2 Jack Test Point 9V Jack DC Voltmeter AF Terminal AC 120V 60Hz Adapter Preset Place the Base Unit in RX SENS mode (step 4) in accordance with the procedure on page 3. Alignment Procedure Step Preset to...
  • Page 8 Handset Unit Transmitter Section Connection HANDSET MAIN PCB HANDSET RF PCB AF GEN. Test Point Power Meter Test Point Battery 1kHz 11.0mV MIC + Pin Terminals Test Point Frequency Counter DC Power Supply Deviation DC 3.8V Meter Preset Place the Handset in VCO/TX FREQ. ADJ mode in accordance with the procedure on page 4. Alignment Procedure Step Adjustment...
  • Page 9 Receiver Section Connection HANDSET RF PCB HANDSET MAIN PCB AC Voltmeter RF SG Dummy Load (150-ohm) J602 − − Battery Connector Test Point Terminals J601 DC Voltmeter DC Power Supply AF Terminal DC 3.8V Preset Place the Handset in RX SENS mode (step 4) in accordance with the procedure on page 4. Alignment Procedure Step Preset to...

  • Page 10: Block Diagrams

    BLOCK DIAGRAMS Handset, Main —9 —...
  • Page 11 Handset, RF — 10 —...
  • Page 12 Base, RF — 11 —...

  • Page 19: Troubleshooting Hints

    TROUBLESHOOTING HINTS 1. The bell does not ring. When the INTCOM key of See 2. The bell does not the base is pressed, does ring & page does not ring. the ringer on the handset ring? When the TEL SG is joined Check IC3 (Line 1) or with the base to make bell IC12 (Line 2) and TEL network...
  • Page 20 2. The bell does not ring & page does not ring. See 3. The base and Can the base and handset handset cannot be be connected? connected. Press handset DIAL key When the key of the Check IC603. while in TALK MODE. handset is pressed, can the Can key touch sound be pulse output at pin 58 of...
  • Page 21 3. The base and handset cannot be connected. Check IC18 and its Check whether the base is peripheral circuit. able to set in the test mode 1. Check the TX POWER and Check base RF unit. the TX FREQUENCY on the base unit.
  • Page 22 Set the handset in the test Check whether there is a Check VR601, R619, R632, mode 3, check whether 250Hz data waveform at R634, R635, R636 deviation of the TX data is Pin 9 of J601. and C611. app. 7 kHz Dev. Check handset RF unit.
  • Page 23 4. Will not dial out. (TONE) Check whether there is a DTMF waveform on Pin 8 Check IC10 and IC6. (Line 1) or Pin 4 (Line 2) of IC6. Check whether there is a DTMF waveform on Pin 7 Check IC2 or IC11. of IC2 (Line 1) or Pin 1 of IC11 (Line 2).
  • Page 24 5. TROUBLE WITH INTERCOM MODE 5-1. The voice from the Base unit cannot be heard on the Handset. Check whether there is an Check MC401 and IC20. audio waveform on Pin 23 of IC20. Check Pin 2 of IC15. 5-2. The voice from the Handset cannot be heard on the Base unit. Check whether there is an Check IC15.
  • Page 25 6. TROUBLE WITH SPEAKERPHONE MODE 6-1. The voice of the caller cannot be heard (INCOMING CALL). Check IC1 (Line 1) or IC8 Check whether there is an (Line 2). audio waveform on Pin 11 of IC1 (Line 1) or Pin 8 of IC8 (Line 2).

  • Page 26: Ic And Transistor Voltage Chart

    IC AND TRANSISTOR VOLTAGE CHART Transistors Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 11.2 10.7 11.0 10.5 10.8 10.0 Q201 2.67 2.66 0.80 0.70 Q203 2.23 2.22 0.71 0.67 Q204 2.70 2.69 0.73 0.73 Q206 2.42 0.77 10.0...
  • Page 27 Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 2.81 1.04 Q212 2.84 1.05 Q609 3.25 1.71 Q501 2.60/0 2.60 INTERMITTENT(STBY) Q610 0.54/0 0.80 INTERMITTENT(STBY) Q503 2.10/0 2.13 INTERMITTENT(STBY) Q611 0.62/0 0.71 INTERMITTENT(STBY) Q504 2.70/0 2.61 INTERMITTENT(STBY) Q612 0.60/0 0.73...
  • Page 28 IC’S Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note IC10 IC11 — 33 —...
  • Page 29 Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note IC12 IC13 0~4.8 IC14 IC15 IC18 IC16 IC17 IC18 — 34 —...
  • Page 30 Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 3.2/0 3.2/0 TONE/PULSE IC21 RING OFF 10.2 RING OFF TONE/PULSE IC22 3.21 3.21 2.68 2.68 IC18 2.78 2.78 3.26 3.25 2.85 2.84 2.85 2.84 2.85 2.84 3.26 3.25 IC201 0.87 0.92...
  • Page 31 Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 1.35/0 1.37 INTERMITTENT(STBY) 1.17 1.17 2.95/0 2.98 INTERMITTENT(STBY) IC504 2.95/0 2.98 INTERMITTENT(STBY) 1.37 1.37 IC204 2.93/0 2.97 INTERMITTENT(STBY) 3.02 3.01 3.02 3.01 3.02 3.01 3.12/0 3.17 INTERMITTENT(STBY) 2.60/0.10 2.64 INTERMITTENT(STBY) 2.60/0...
  • Page 32 Unit [V] Ref. STBY TALK Note IC603 IC604 IC605 — 37 —...

  • Page 33: Semiconductor Lead Identification

    SEMICONDUCTOR LEAD IDENTIFICATION Base Unit D3/D4/D7/D8 D1/D11: MTZ36AJ D301: VR1102W D201: 1SS226 D2/D6/D10/D12/D14 D302/D303/D305: PG1102W D17/D18/D25/D26/D27: 1N4148 D304: AA1102W D5/D20: HZ33CP D15: 1N4003 Anode/Cathode D22: HZ7A1 D29/D30: HZ6C-3 Cathode Anode Anode Cathode Anode Cathode D9:RLS4148 D306: BRPG1202W D31: HZK6C D23: RB160L-40 D28: RLZJ-6.2B Anode Anode...
  • Page 34 IC2/IC11/IC16 IC3/IC7/IC12/IC17 LTV-817 M5223L IR3N74AN NJU7032M OUT1 MUTE MUTE OUT2 IN–1 – EREC CREC – IN+1 IN–2 VREF IN+2 IC14: RH5VL33CA IC18 IC21: RH5VL35CA HD6433033 IC22: RH5VL47CA 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 TIOCA3/TP8/PB0 P71/AN1 TIOCB3/TP9/PB1...
  • Page 35 I C 1 0 I C 1 3 IC203 IC204 T C 3 5 2 1 9 F T K 1 1 2 3 2 A M µPC8112T MB15F13PFV1 T O N E Lo in Clock C O N T −T D −...
  • Page 36 IC503 IC504 IC601 µPC8112T MB15F13PFV1 IR3N74AN Lo in Clock MUTE MUTE Data EREC CREC IF out RF in VREF LD/fout Xfin IC603 MB89615RPFM IC602 TK11232AM CONT P00/AD0 P46/SO2 P01/AD1 P47/SI2 P02/AD2 P50/AN0 P03/AD3 P51/AN1 NOISE BYPASS Vout P04/AD4 P52/AN2 P05/AD5 P53/AN3 P06/AD6 P54/AN4...

  • Page 37: Electrical Parts Location

    ELECTRICAL PARTS LOCATIONS Base, Main — 42 —...
  • Page 38 Base, RF — 43 —...
  • Page 39 Base, Key — 44 —...
  • Page 40 Handset, Main — 45 —...
  • Page 41 Handset, RF — 46 —...

  • Page 42: Wiring Diagrams

    WIRING DIAGRAMS Base —47 —...
  • Page 43 Handset —48 —...

  • Page 44: Exploded View And Mechanical Parts List

    EXPLODED VIEW AND MECHANICAL PARTS LIST Base, Unit Note: To remove the RF Assembly from the unit, remove four screws 24 . Three screws 23 are used for fastening the Shield Cases 26 and 27 . — 49 —...
  • Page 45 Base Unit LOC. PART NO. REF. NO. DESCRIPTION RC005685 GNBZ157880Z Button, Function RC005680 GCAS257882Z Case, Battery RC005678 GCAS157875Z Case, Bottom RC005677 GCAS157874Z Case, Top RC005686 HTML457884Z Charge Terminal C5191(PBP) RC002384 LFUT428079Z Foot Bumpon SJ-5916 1.6T RC005689 LHDZ453179Z Holder, Mic RC005444 HHDS431080Z Holder, Speaker SUS304-CSP,0.6T...
  • Page 46 Handset Note: To remove the RF Assembly from the unit, remove four screws 69 . Three screws 68 are used for fastening the Shield Cases 70 and 71 . — 51 —...
  • Page 47 Handset LOC. PART NO. REF. NO. DESCRIPTION RC006714 RBLD457881Z Blind RC006705 GNBZ357892Z Button, Function RC006706 GNBZ457891Z Button, Push RC005700 GCAS157887Z Case, Front RC006701 GCAS157888Z Case, Rear RC006707 HTML457893Z Charge Terminal C2680(BSP) RC006703 GCAS457897Z Cover Elastomer RC006702 GCAS357889Z Cover, Battery RC006715 RCUM417955Z Cushion Moltplene...

  • Page 48: Parts List

    PARTS LIST PRODUCT SAFETY NOTE: Products marked with a have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice of this service manual. Don ’ t degrade the safety of the product through important servicing. Symbol Symbol ±...
  • Page 49 LOC. PART NO. DESCRIPTION RC004562 BCUB814725Z CERAMIC 0.0047UF 50V K B RC005667 BCUB811835Z CERAMIC 0.018UF 50V K B RC005667 BCUB811835Z CERAMIC 0.018UF 50V K B RC005635 BCKB134715Z CERAMIC 470PF 1000V K YB(B) RC004494 BCUB511045Z CERAMIC 0.1UF 25V K B RC004503 BCUP512240Z CERAMIC 0.22UF 25V Z F...
  • Page 50 LOC. PART NO. DESCRIPTION RC004481 BCUA811514Z CERAMIC 150PF 50V J CH RC004560 BCUB813325Z CERAMIC 0.0033UF 50V K B RC004560 BCUB813325Z CERAMIC 0.0033UF 50V K B RC004492 BCUA818204Z CERAMIC 82PF 50V J CH RC004138 BCAZ811006Z ELECTROLYTIC 10UF 50V M C-156 RC004739 BCUB813335Z CERAMIC 0.033UF 50V K B...
  • Page 51 LOC. PART NO. DESCRIPTION C129 RC001807 BCAZ812296Z ELECTROLYTIC 2.2UF 50V M C-156 C130 RC001794 BCAZ111016Z ELECTROLYTIC 100UF 10V M C-156 C131 RC005166 BCUP311050Z CERAMIC 1UF 16V Z F C132 RC004497 BCUB811035Z CERAMIC 0.01UF 50V K B C133 RC001794 BCAZ111016Z ELECTROLYTIC 100UF 10V M C-156 C134 RC004145...
  • Page 52 LOC. PART NO. DESCRIPTION C227 RC005202 BCML311045Z CERAMIC 0.1UF 16V K B C228 RC005214 BCMM812214Z CERAMIC 220PF 50V J CH C229 RC005225 BCSS114796Z TANTALUM CHIP TAPE 4.7UF 10V M A C-241 C230 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C231 RC005214 BCMM812214Z CERAMIC...
  • Page 53 LOC. PART NO. DESCRIPTION C279 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C280 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C281 RC005204 BCML811025Z CERAMIC 0.001UF 50V K B C282 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C283 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C284 RC005203...
  • Page 54 LOC. PART NO. DESCRIPTION C535 RC004980 BCUG813091Z CERAMIC 3PF 50V C CJ C536 RC004988 BCUH813304Z CERAMIC 33PF 50V J CH C537 RC004988 BCUH813304Z CERAMIC 33PF 50V J CH C538 RC004486 BCUA814091Z CERAMIC 4PF 50V C CH C540 RC004996 BCUL512235Z CERAMIC 0.022UF 25V K B C541 RC004981...
  • Page 55 LOC. PART NO. DESCRIPTION C585 RC004998 BCUL811035Z CERAMIC 0.01UF 50V K B C586 RC004998 BCUL811035Z CERAMIC 0.01UF 50V K B C589 RC004494 BCUB511045Z CERAMIC 0.1UF 25V K B C590 RC004998 BCUL811035Z CERAMIC 0.01UF 50V K B C591 RC004982 BCUH811014Z CERAMIC 100PF 50V J CH C594 RC004998...
  • Page 56 LOC. PART NO. DESCRIPTION C643 RC002229 BCXT511045Z CERAMIC 0.1UF 25V K B C644 RC001632 BCXT813335Z CERAMIC 0.033UF 50V K B C645 RC002229 BCXT511045Z CERAMIC 0.1UF 25V K B CT201 RC005226 BCTY0096100 TRIMMER CT-096 CTZ3S10A-W1PF55 CT501 RC005226 BCTY0096100 TRIMMER CT-096 CTZ3S10A-W1PF55 DIODES RC003995 BDAY0736004...
  • Page 57 LOC. PART NO. DESCRIPTION D609 RC004190 BDAY0867001 LTL16KGE-A D610 RC004189 BDAY0866001 LTL-16KPE-A FILTERS FT201 RC005230 BFLY0826001 FILTER FL-826 TQS-833B-7R FT204 RC004873 BFLY0747001 CERAMIC FL-747 SFE14.3MA FT205 RC005231 BFLY0830001 FILTER FL-830 KBF-455RL-30KC FT501 RC005230 BFLY0826001 FILTER FL-826 TQS-833B-7R FT504 RC004873 BFLY0747001 CERAMIC FL-747 SFE14.3MA FT505 RC005231...
  • Page 58 LOC. PART NO. DESCRIPTION JACKS RC004854 BJKY0599009 JK-599 IMSA-9110S-09 9P RC001094 BJKY0234001 JK-234 DJ13-1 RC008727 BJKY0944021 JK-944 IMSA-9604S-21C RC005474 BJKY0803004 JK-803 A36-006-4910B 4P RC003586 BJKY0803002 JK-803 A36-006-4910A 2P J201 RC004886 BPGY0147003 PLUG PG-147 9218B-1-03A-T 3P J202 RC004875 BJKY0736009 JK-736 9210B-1-09Z386-T J301 RC008730 BJKY0943021...
  • Page 59 LOC. PART NO. DESCRIPTION RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC005642 BDBD1683119 DB-440 2SD1683-T RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RC001637 BDBC2712303...
  • Page 60 LOC. PART NO. DESCRIPTION Q610 RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L Q611 RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L Q612 RC001637 BDBC2712303 DB-381 2SC2712-GR TE85L RESISTORS RC004540 BRFX014744Z CARBON 470K 1/10W J BULK RC004525 BRFX012224Z CARBON 2.2K 1/10W J BULK RC004526 BRFX012234Z CARBON 22K 1/10W J BULK RC004514 BRFX011044Z...
  • Page 61 LOC. PART NO. DESCRIPTION RC004513 BRFX011034Z CARBON 10K 1/10W J BULK RC004512 BRFX011024Z CARBON 1K 1/10W J BULK RC002350 BRSN101514Z METAL OXIDE 150 1W J (P=12.5) RC005657 BRFC181064Z CARBON 10M 1/8W J TAPING RC005656 BRFC011064Z CARBON 10M 1/10W J TAPE RC005657 BRFC181064Z CARBON...
  • Page 62 LOC. PART NO. DESCRIPTION RC004742 BRFX011524Z CARBON 1.5K 1/10W J BULK RC004539 BRFX014734Z CARBON 47K 1/10W J BULK RC004513 BRFX011034Z CARBON 10K 1/10W J BULK RC004513 BRFX011034Z CARBON 10K 1/10W J BULK R100 RC004513 BRFX011034Z CARBON 10K 1/10W J BULK R101 RC004514 BRFX011044Z...
  • Page 63 LOC. PART NO. DESCRIPTION R145 RC004538 BRFX014724Z CARBON 4.7K 1/10W J BULK R146 RC004538 BRFX014724Z CARBON 4.7K 1/10W J BULK R147 RC004514 BRFX011044Z CARBON 100K 1/10W J BULK R148 RC004514 BRFX011044Z CARBON 100K 1/10W J BULK R149 RC004532 BRFX012744Z CARBON 270K 1/10W J BULK R150 RC004530...
  • Page 64 LOC. PART NO. DESCRIPTION R194 RC004539 BRFX014734Z CARBON 47K 1/10W J BULK R195 RC004539 BRFX014734Z CARBON 47K 1/10W J BULK R196 RC004539 BRFX014734Z CARBON 47K 1/10W J BULK R197 RC004539 BRFX014734Z CARBON 47K 1/10W J BULK R198 RC004539 BRFX014734Z CARBON 47K 1/10W J BULK R199 RC004539...
  • Page 65 LOC. PART NO. DESCRIPTION R302 RC004742 BRFX011524Z CARBON 1.5K 1/10W J BULK R351 RC005117 BRSJ221804Z METAL OXIDE 18 1/2WS J R352 RC004538 BRFX014724Z CARBON 4.7K 1/10W J BULK R353 RC004534 BRFX013324Z CARBON 3.3K 1/10W J BULK R354 RC004513 BRFX011034Z CARBON 10K 1/10W J BULK R355 RC004512...
  • Page 66 LOC. PART NO. DESCRIPTION R396 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R397 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R398 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R399 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R451 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R452 RC004512...
  • Page 67 LOC. PART NO. DESCRIPTION R543 RC005017 BRFX164704Z CARBON 47 1/16W J BULK R544 RC005002 BRFX013304Z CARBON 33 1/10W J BULK R546 RC005019 BRFX164724Z CARBON 4.7K 1/16W J BULK R547 RC008738 BRFX161054Z CARBON 1M 1/16W J BULK R548 RC005029 BRFX162204Z CARBON 22 1/16W J BULK R551 RC005003...
  • Page 68 LOC. PART NO. DESCRIPTION R642 RC005240 BRFC161024Z CARBON 1K 1/16W J TAPING R643 RC005240 BRFC161024Z CARBON 1K 1/16W J TAPING R644 RC005240 BRFC161024Z CARBON 1K 1/16W J TAPING R645 RC005242 BRFC161044Z CARBON 100K 1/16W J TAPING R646 RC005256 BRFC164724Z CARBON 4.7K 1/16W J TAPING R647 RC005240...
  • Page 69 LOC. PART NO. DESCRIPTION OTHER ELECTRICAL PARTS AD901 RC003328 BADY0037001 AC ADAPTOR AD-037 KAD-2216 AT701 RC005633 BATY0335001 ANTENNA AT-335 BT901 RC005634 BBTY0354001 BATTERY BT-354 3.6V 600MAH BT902 RC005634 BBTY0354001 BATTERY BT-354 3.6V 600MAH FC701 RC005676 BWFY2991205 FLAT CABLE WF-299 4-120-4 MC401 RC004062 BMKY0475001 MICROPHONE...

  • Page 70: Assembly Parts List

    ASSEMBLY PARTS LIST NOTE: Following part numbers are not available as replacement parts. Order parts necessary for repair or contact the Toshiba Factory Service Center. LOC. PART NO. DESCRIPTION RC005630 AD840BLBA BASE MAIN ASSEMBLY RC005317 AD825ZLBB BASE RF ASSEMBLY RC005631...

  • Page 71: Specifications

    SPECIFICATIONS Measurement Conditions Standard Voltage: Handset Unit DC 3.6 V ±0.025 V Base Unit AC 120 V ±3 V 60 Hz Temperature: 25 °C ±5 °C Channel: Handset (TX Frequency) Base (TX Frequency) 902.078145 MHz 925.999522 MHz 902.128199 MHz 926.049576 MHz 902.178254 MHz 926.099630 MHz 902.228308 MHz...
  • Page 72 Base Unit Receiver Unit Nominal Limit −115 < −107 Sensitivity 12dB SINAD (CCITT Filter ON) −0.5 −4.5 ~ +3.5 Frequency Response 0.3 kHz − 6 −10 ~ − 2 3.0 kHz Distortion at 1 mV RF Input < 5 S/N ratio at 1 mV RF Input (CCITT Filter ON, Compander ON) >...
  • Page 73 DTMF Output (600 Ω load) −7 > −10 a. Minimum Level On Single Tone Low Group −5 > −8 High Group −3 b. DTMF Level < 0 c. DTMF Frequency Row 1 687 ~ 707 Row 2 759 ~ 781 Row 3 840 ~ 864 Row 4...

  • Page 74: Power Consumption

    Transmitter RF Power (50 Ω Load) −6 −9 ~ −3 Modulation Sensitivity 7 ~ 18 −1 −5 ~ +3 Frequency Response 0.3 kHz −1 −5 ~ +3 3.0 kHz Frequency Tolerance (25 °C) ±1500 Code Deviation < 10 Distortion < 5 Adjacent CH Power (Input 130 mV, 50 KHz Offset, 25 KHz BW) >...
  • Page 75 MECHANICAL PARTS LIST...

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